-bash: syntax error in conditional expression -bash: syntax error near 'on' 可以看到,将value变量值设成空,[[ -n $value ]]返回为 1,确认该变量值不为空是 false。 [[ -z $value ]]返回为 0,确认该变量值为空是 true。 即使$value不加双引号,也能正确判断。 如果是用[命令就会判断异常。 当va...
-bash: syntax error in conditional expression -bash: syntax error near 'string' 可以看到,value变量对应的字符串带有空格,[[ -n $value ]]命令可以正确判断到value变量值不是空字符串,没有对该变量值进行单词拆分。 而test -n $value命令会执行报错,value变量值带有空格,$value经过单词拆分后会变成两个字符...
yourscript: line 1: syntax error in conditional expression 注意,set -e有严重的陷阱,我强烈建议不要使用它;但它确实可以让你解决这个具体的问题。本站已为你智能检索到如下内容,以供参考: 🐻 相关问答 6 个 1、更新语法导致值“)”出现Brakeman错误分析错误 2、执行shell的shell代码会导致分段错误 3、ES...
消息应传递:[标记]已解决#123案例标题(用于功能)[标记]修复#123案例名称(用于错误) 出现错误:.husky/commit-msg: line 5: syntax error in conditional expression: unexpected token ('`发布于 7 月前 ✅ 最佳回答: 您可以使用将正则表达式定义为 rx='^\[[^][]*] (resolved|fixed) #[0-9]* [A-...
This is the error withbashonRHEL5: Raw ./x: line 7: syntax error in conditional expression: unexpected token `(' ./x: line 7: syntax error near `@(6' ./x: line 7: `[[ $RELEASE == @(6)* ]] && CONF=/etc/rsyslog.conf || CONF=/etc/syslog.conf' ...
bash: syntax error in conditional expression bash: syntax error near `-a' $ [ 1 < 2 -a b > a ]&&echo true||echo false true $ [ 1 < 2 && b > a ]&&echo true||echo false #wrong syntax bash: [: missing `]' false $ [ 1 < 2 \&\& b > a ]&&echo true||echo false #...
It looks like the exit status of this program is 0, the same exit status astrue. This conditional expression is saying that[[ 4 -gt 3 ]]is equivalent totrue, which of course we know is logically consistent, 4 is in fact greater than 3! Let’s see what happens if we flip the expr...
并加以处理。一般throw抛出的异常要和catch所捕获的异常类型所匹配。异常处理的一般格式为：
Here’s the basic syntax of a ‘case’ statement: caseexpressioninpattern1)# code to execute if pattern1 matches;;pattern2)# code to execute if pattern2 matches;;*# code to execute if no pattern matchesesac Bash Copy Example of ‘Case’ Statement ...
export export命令将会使得被 export 的变量在运行的脚本(或shell)的所有的子进程中都可用. 不幸...